Pre-Purchase Structural Assessments
Before committing to a property purchase, it is worth knowing whether visible cracking, movement or other defects are merely cosmetic or could indicate a more significant structural problem. A house may look attractive and appear generally well maintained while still having structural issues that are not obvious during a normal viewing.
A pre-purchase structural assessment provides an independent professional opinion on the structural condition of the accessible parts of the property. It is intended to help a prospective purchaser make a better-informed decision before becoming committed to the purchase.
What I Look For
The assessment is directed at the structural aspects of the property rather than attempting to provide a general building inspection. I look at the parts of the building where signs of structural distress or movement may be evident, including:
• Cracks in masonry walls, floors, slabs and ceilings
• Signs of settlement or differential movement
• Cracking or distortion around openings and extensions
• Structural movement affecting beams, columns or slabs
• Retaining walls and other structures where movement is apparent
• Distress associated with additions, alterations or changes to the building
• Signs that may indicate foundation movement or problems with supporting ground
• Other visible conditions that could have structural significance
The assessment is primarily visual and non-invasive. Photographs are taken where appropriate to record significant observations and assist in explaining the findings.
A Crack Does Not Always Mean Structural Failure
One of the most common concerns when buying a property is cracking. Cracks can have many causes. Some are associated with normal drying and shrinkage of materials, thermal movement or minor building defects. Others may indicate settlement, foundation movement, inadequate support or continuing structural distress.
The important question is therefore not simply whether a crack exists, but what the available evidence suggests about its likely significance.
The pattern, position, width, direction and extent of cracking are considered together with other visible evidence. Where appropriate, the surrounding construction and apparent movement of the building are also considered.
What The Assessment Can Help You Decide
A purchaser generally wants an answer to a practical question: “Is there a structural problem here that should influence my decision to buy?”
The assessment can help identify conditions that appear insignificant, conditions requiring monitoring, and conditions that warrant further investigation or remedial work.
For example, a property may have several cracks in an external wall. An assessment may indicate that these are consistent with relatively minor movement and do not presently appear to represent a significant structural concern. Conversely, stepped cracking through masonry, displacement of a retaining wall or significant differential movement between parts of a building may justify further investigation before the purchase proceeds.
The assessment may also identify situations where the available visual evidence is insufficient to establish the cause with confidence. In such circumstances, I can recommend appropriate further investigation rather than making an unsupported conclusion.
A Practical Engineering Opinion
The purpose is not to alarm a purchaser about every crack or defect. It is to distinguish conditions that appear relatively minor from those that deserve greater attention.
Where the building is on sloping ground, has been extended, is built on variable ground conditions or contains unusual structural arrangements, the assessment can be particularly useful. Older houses and properties that have undergone several alterations can also require careful consideration because the original construction may differ substantially from later additions.
The assessment is limited to areas that can be safely inspected without destructive investigation or specialist access. It is not a substitute for specialist investigations such as geotechnical, drainage, waterproofing, electrical or roofing investigations where these are required.
Report And Findings
The findings are documented in a professional structural assessment report. Significant observations can be supported by photographs, and the report explains the structural implications of the conditions observed.
Where further investigation or remedial work appears appropriate, this is identified in the report. The intention is to give the purchaser useful engineering information rather than an unnecessarily complicated list of defects.
Local Experience
I have extensive practical experience in structural engineering and in assessing buildings affected by cracking, movement, settlement and other structural problems. My experience includes residential structures, reinforced-concrete construction, masonry buildings, retaining structures and buildings constructed in the coastal conditions of the Western Cape.
A pre-purchase assessment is particularly valuable when there is a specific structural concern that has already been noticed during a viewing.
Before You Sign, Get An Engineering Opinion
If you are considering buying a property and have concerns about cracking, movement, settlement or another apparent structural problem, arrange the assessment before the purchase becomes irreversible.
Request a pre-purchase structural assessment and obtain an independent professional opinion on the condition observed.
